The owners voted on Tuesday to outlaw players from leaping over offensive linemen on field-goal or extra-point attempts. The act of jumping over the center to block kicks had gained popularity in recent years, but it was viewed as unsafe by the competition committee and the NFL Players Association.

The owners also approved changes to instant replay that will give the power to make the decision to the league office in New York. Referees will no longer have to go “under the hood” on the sideline. Instead they will be given a tablet on the field to view the play and will talk to the league office.

Last year’s rule that kicked players out of the game after two certain kinds of unsportsmanlike conduct penalties was made permanent.

Committing multiple penalties during the same down to manipulate the game clock will now be considered unsportsmanlike conduct. The Ravens and 49ers both committed multiple holding penalties last season to run out the clock at the end of the game.

The owners tabled a proposal to shorten the overtime period from 15 minutes to 10. They also voted against a proposal to have the ball placed at the 20-yard line if a kickoff went through the uprights.

Other rule changes: Receivers running pass routes will now have defenseless player protection. Crackback blocks from backfield players in motion are now prohibited. Touchbacks on free kicks will now result in the ball being placed at the 25-yard line for this season.